CVE-2026-89453: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Put PCI device after handling PPR faults iommu_call_iopf_notifier() looks up the requester with pci_get_domain_bus_and_slot(), which returns a PCI device with its reference count incremented. Neither the successful iommu_report_device_fault() path nor the abort path drops that reference, so every handled PPR request leaks a PCI device reference. This is the same ownership rule that was fixed for the old iommu_v2 ppr_notifier() path by commit 6cf0981c2233 ("iommu/amd: Fix pci device refcount leak in ppr_notifier()"), but iommu_call_iopf_notifier() was added later as a separate PPR/IOPF notifier path. Drop the PCI device reference after handling the PPR entry.

Засегнати продукти

• Linux Linux: 978d626b8f1a239acc635323d731c77eae54eb61 преди 1de4443f85e4405af00153cdf8ba73ff12a65036; 978d626b8f1a239acc635323d731c77eae54eb61 преди cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e; 978d626b8f1a239acc635323d731c77eae54eb61 преди d1470e16c1977e6c94fadf6048deafaa4d150fec; 978d626b8f1a239acc635323d731c77eae54eb61 преди af3b69b16383fbc8fe5f61b5b0150d2e41ede71f
• Linux Linux: 6.10; преди 6.10; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; 7.3 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89453
• https://nvd.nist.gov/vuln/detail/CVE-2026-89453
• https://git.kernel.org/stable/c/1de4443f85e4405af00153cdf8ba73ff12a65036
• https://git.kernel.org/stable/c/cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e
• https://git.kernel.org/stable/c/d1470e16c1977e6c94fadf6048deafaa4d150fec
• https://git.kernel.org/stable/c/af3b69b16383fbc8fe5f61b5b0150d2e41ede71f